May 7th: Dow Jones Up 828 pts Since April 11th, 2007 close....Time Bomb?

Re: May 7th: Dow Jones Up 828 pts Since April 11th, 2007 close....Time Bomb?

The real estate bubble has already burst. Unlike stocks it does not happen overnight in case of real estate.
Is there any possibility that the investors in the real estate are now pulling out of there and adding stocks to their portfolio? That could be a reason for the run up in stock market.